1
|
Yao F, Li J, Huang M, Gao X, Zhang Y. Comparison of computed versus acquired readout-segmented diffusion-weighted imaging in visualizing scrotal or testicular lesions. Clin Radiol 2024:S0009-9260(24)00396-9. [PMID: 39122632 DOI: 10.1016/j.crad.2024.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 06/26/2024] [Accepted: 07/15/2024] [Indexed: 08/12/2024]
Abstract
PURPOSE Combining computed diffusion-weighted imaging (DWI) with readout-segmented echo-planar-imaging may shorten acquisition time and improve imaging quality. This study aimed to compare computed vs. acquired DWI qualitatively and quantitatively in visualizing scrotal or testicular lesions. MATERIALS AND METHODS We retrospectively enrolled 57 consecutive men who underwent scrotal MRI. Four computed DWI sets (cDWI800, cDWI1000, cDWI1200, and cDWI1400) were generated from acquired DWI with two lower b-values (150 and 600 s/mm2). Acquired DWI (DWI800 and DWI1000) and computed DWI were compared through qualitative (susceptibility artifact, signal loss artifact, anatomic clarity, and lesion conspicuity) and quantitative assessment (signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR), and lesion-to-testicular parenchyma contrast ratio (CR)). RESULTS Computed DWI was prone to signal loss artifact and slightly lower assessment scores in terms of anatomic clarity and lesion conspicuity, comparing with acquired DWI. The SNR of computed and acquired DWI decreased with increasing b value. Under the same b-values (800 and 1,000 s/mm2), there was no difference in the median SNR and CR between computed and acquired DWI. The median CR of cDWI1400 was significantly higher than that of the other DWI sets excepting cDWI1200 (P=1.000). The median CNR tended to be lower for computed vs. acquired DWI, while no significant difference (P=0.233). CONCLUSIONS Computed and acquired DWI were nearly equivalent in both qualitative and quantitative evaluations at the b values of 800 and 1,000 s/mm2. Computed DWI could enhance the contrast of scrotal or testicular lesions.
Collapse
Affiliation(s)
- F Yao
- Department of MRI, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province 450052, China.
| | - J Li
- Department of MRI, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province 450052, China
| | - M Huang
- Department of MRI, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province 450052, China
| | - X Gao
- Department of MRI, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province 450052, China
| | - Y Zhang
- Department of MRI, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province 450052, China
| |
Collapse
|
2
|
Li Q, Xu WY, Sun NN, Feng QX, Zhu ZN, Hou YJ, Sang ZT, Li FY, Li BW, Xu H, Liu XS, Zhang YD. MRI versus Dual-Energy CT in Local-Regional Staging of Gastric Cancer. Radiology 2024; 312:e232387. [PMID: 39012251 DOI: 10.1148/radiol.232387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/17/2024]
Abstract
Background Preoperative local-regional tumor staging of gastric cancer (GC) is critical for appropriate treatment planning. The comparative accuracy of multiparametric MRI (mpMRI) versus dual-energy CT (DECT) for staging of GC is not known. Purpose To compare the diagnostic accuracy of personalized mpMRI with that of DECT for local-regional T and N staging in patients with GC receiving curative surgical intervention. Materials and Methods Patients with GC who underwent gastric mpMRI and DECT before gastrectomy with lymphadenectomy were eligible for this single-center prospective noninferiority study between November 2021 and September 2022. mpMRI comprised T2-weighted imaging, multiorientational zoomed diffusion-weighted imaging, and extradimensional volumetric interpolated breath-hold examination dynamic contrast-enhanced imaging. Dual-phase DECT images were reconstructed at 40 keV and standard 120 kVp-like images. Using gastrectomy specimens as the reference standard, the diagnostic accuracy of mpMRI and DECT for T and N staging was compared by six radiologists in a pairwise blinded manner. Interreader agreement was assessed using the weighted κ and Kendall W statistics. The McNemar test was used for head-to-head accuracy comparisons between DECT and mpMRI. Results This study included 202 participants (mean age, 62 years ± 11 [SD]; 145 male). The interreader agreement of the six readers for T and N staging of GC was excellent for both mpMRI (κ = 0.89 and 0.85, respectively) and DECT (κ = 0.86 and 0.84, respectively). Regardless of reader experience, higher accuracy was achieved with mpMRI than with DECT for both T (61%-77% vs 50%-64%; all P < .05) and N (54%-68% vs 51%-58%; P = .497-.005) staging, specifically T1 (83% vs 65%) and T4a (78% vs 68%) tumors and N1 (41% vs 24%) and N3 (64% vs 45%) nodules (all P < .05). Conclusion Personalized mpMRI was superior in T staging and noninferior or superior in N staging compared with DECT for patients with GC. Clinical trial registration no. NCT05508126 © RSNA, 2024 Supplemental material is available for this article. See also the editorial by Méndez and Martín-Garre in this issue.
Collapse
Affiliation(s)
- Qiong Li
- From the Departments of Radiology (Q.L., W.Y.X., N.N.S., Q.X.F., Z.N.Z., Y.J.H., Z.T.S., X.S.L., Y.D.Z.) and General Surgery (F.Y.L., B.W.L., H.X.), the First Affiliated Hospital with Nanjing Medical University, No. 300 Guangzhou Rd, Nanjing 210009, China
| | - Wei-Yue Xu
- From the Departments of Radiology (Q.L., W.Y.X., N.N.S., Q.X.F., Z.N.Z., Y.J.H., Z.T.S., X.S.L., Y.D.Z.) and General Surgery (F.Y.L., B.W.L., H.X.), the First Affiliated Hospital with Nanjing Medical University, No. 300 Guangzhou Rd, Nanjing 210009, China
| | - Na-Na Sun
- From the Departments of Radiology (Q.L., W.Y.X., N.N.S., Q.X.F., Z.N.Z., Y.J.H., Z.T.S., X.S.L., Y.D.Z.) and General Surgery (F.Y.L., B.W.L., H.X.), the First Affiliated Hospital with Nanjing Medical University, No. 300 Guangzhou Rd, Nanjing 210009, China
| | - Qiu-Xia Feng
- From the Departments of Radiology (Q.L., W.Y.X., N.N.S., Q.X.F., Z.N.Z., Y.J.H., Z.T.S., X.S.L., Y.D.Z.) and General Surgery (F.Y.L., B.W.L., H.X.), the First Affiliated Hospital with Nanjing Medical University, No. 300 Guangzhou Rd, Nanjing 210009, China
| | - Zhen-Ning Zhu
- From the Departments of Radiology (Q.L., W.Y.X., N.N.S., Q.X.F., Z.N.Z., Y.J.H., Z.T.S., X.S.L., Y.D.Z.) and General Surgery (F.Y.L., B.W.L., H.X.), the First Affiliated Hospital with Nanjing Medical University, No. 300 Guangzhou Rd, Nanjing 210009, China
| | - Ya-Jun Hou
- From the Departments of Radiology (Q.L., W.Y.X., N.N.S., Q.X.F., Z.N.Z., Y.J.H., Z.T.S., X.S.L., Y.D.Z.) and General Surgery (F.Y.L., B.W.L., H.X.), the First Affiliated Hospital with Nanjing Medical University, No. 300 Guangzhou Rd, Nanjing 210009, China
| | - Zi-Tong Sang
- From the Departments of Radiology (Q.L., W.Y.X., N.N.S., Q.X.F., Z.N.Z., Y.J.H., Z.T.S., X.S.L., Y.D.Z.) and General Surgery (F.Y.L., B.W.L., H.X.), the First Affiliated Hospital with Nanjing Medical University, No. 300 Guangzhou Rd, Nanjing 210009, China
| | - Feng-Yuan Li
- From the Departments of Radiology (Q.L., W.Y.X., N.N.S., Q.X.F., Z.N.Z., Y.J.H., Z.T.S., X.S.L., Y.D.Z.) and General Surgery (F.Y.L., B.W.L., H.X.), the First Affiliated Hospital with Nanjing Medical University, No. 300 Guangzhou Rd, Nanjing 210009, China
| | - Bo-Wen Li
- From the Departments of Radiology (Q.L., W.Y.X., N.N.S., Q.X.F., Z.N.Z., Y.J.H., Z.T.S., X.S.L., Y.D.Z.) and General Surgery (F.Y.L., B.W.L., H.X.), the First Affiliated Hospital with Nanjing Medical University, No. 300 Guangzhou Rd, Nanjing 210009, China
| | - Hao Xu
- From the Departments of Radiology (Q.L., W.Y.X., N.N.S., Q.X.F., Z.N.Z., Y.J.H., Z.T.S., X.S.L., Y.D.Z.) and General Surgery (F.Y.L., B.W.L., H.X.), the First Affiliated Hospital with Nanjing Medical University, No. 300 Guangzhou Rd, Nanjing 210009, China
| | - Xi-Sheng Liu
- From the Departments of Radiology (Q.L., W.Y.X., N.N.S., Q.X.F., Z.N.Z., Y.J.H., Z.T.S., X.S.L., Y.D.Z.) and General Surgery (F.Y.L., B.W.L., H.X.), the First Affiliated Hospital with Nanjing Medical University, No. 300 Guangzhou Rd, Nanjing 210009, China
| | - Yu-Dong Zhang
- From the Departments of Radiology (Q.L., W.Y.X., N.N.S., Q.X.F., Z.N.Z., Y.J.H., Z.T.S., X.S.L., Y.D.Z.) and General Surgery (F.Y.L., B.W.L., H.X.), the First Affiliated Hospital with Nanjing Medical University, No. 300 Guangzhou Rd, Nanjing 210009, China
| |
Collapse
|
3
|
Zhou X, Xu D, Wang M, Ma R, Song C, Dong Z, Luo Y, Wang J, Feng ST. Preoperative assessment of peripheral vascular invasion of pancreatic ductal adenocarcinoma based on high-resolution MRI. BMC Cancer 2023; 23:1092. [PMID: 37950223 PMCID: PMC10638695 DOI: 10.1186/s12885-023-11451-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 09/26/2023] [Indexed: 11/12/2023] Open
Abstract
OBJECTIVES Preoperative imaging of vascular invasion is important for surgical resection of pancreatic ductal adenocarcinoma (PDAC). However, whether MRI and CT share the same evaluation criteria remains unclear. This study aimed to compare the diagnostic accuracy of high-resolution MRI (HR-MRI), conventional MRI (non-HR-MRI) and CT for PDAC vascular invasion. METHODS Pathologically proven PDAC with preoperative HR-MRI (79 cases, 58 with CT) and non-HR-MRI (77 cases, 59 with CT) were retrospectively collected. Vascular invasion was confirmed surgically or pathologically. The degree of tumour-vascular contact, vessel narrowing and contour irregularity were reviewed respectively. Diagnostic criteria 1 (C1) was the presence of all three characteristics, and criteria 2 (C2) was the presence of any one of them. The diagnostic efficacies of different examination methods and criteria were evaluated and compared. RESULTS HR-MRI showed satisfactory performance in assessing vascular invasion (AUC: 0.87-0.92), especially better sensitivity (0.79-0.86 vs. 0.40-0.79) than that with non-HR-MRI and CT. HR-MRI was superior to non-HR-MRI. C2 was superior to C1 on CT evaluation (0.85 vs. 0.79, P = 0.03). C1 was superior to C2 in the venous assessment using HR-MRI (0.90 vs. 0.87, P = 0.04) and in the arterial assessment using non-HR-MRI (0.69 vs. 0.68, P = 0.04). The combination of C1-assessed HR-MRI and C2-assessed CT was significantly better than that of CT alone (0.96 vs. 0.86, P = 0.04). CONCLUSIONS HR-MRI more accurately assessed PDAC vascular invasion than conventional MRI and may contribute to operative decision-making. C1 was more applicable to MRI scans, and C2 to CT scans. The combination of C1-assessed HR-MRI and C2-assessed CT outperformed CT alone and showed the best efficacy in preoperative examination of PDAC.
Collapse
Affiliation(s)
- Xiaoqi Zhou
- Department of Radiology, The first Affiliated Hospital, Sun Yat-Sen University, 58th, The Second Zhongshan Road, Guangzhou, Guangdong, China
| | - Danyang Xu
- Department of Radiology, The first Affiliated Hospital, Sun Yat-Sen University, 58th, The Second Zhongshan Road, Guangzhou, Guangdong, China
| | - Meng Wang
- Department of Radiology, The first Affiliated Hospital, Sun Yat-Sen University, 58th, The Second Zhongshan Road, Guangzhou, Guangdong, China
| | - Ruixia Ma
- Department of Radiology, The first Affiliated Hospital, Sun Yat-Sen University, 58th, The Second Zhongshan Road, Guangzhou, Guangdong, China
| | - Chenyu Song
- Department of Radiology, The first Affiliated Hospital, Sun Yat-Sen University, 58th, The Second Zhongshan Road, Guangzhou, Guangdong, China
| | - Zhi Dong
- Department of Radiology, The first Affiliated Hospital, Sun Yat-Sen University, 58th, The Second Zhongshan Road, Guangzhou, Guangdong, China
| | - Yanji Luo
- Department of Radiology, The first Affiliated Hospital, Sun Yat-Sen University, 58th, The Second Zhongshan Road, Guangzhou, Guangdong, China.
| | - Jifei Wang
- Department of Radiology, The first Affiliated Hospital, Sun Yat-Sen University, 58th, The Second Zhongshan Road, Guangzhou, Guangdong, China.
| | - Shi-Ting Feng
- Department of Radiology, The first Affiliated Hospital, Sun Yat-Sen University, 58th, The Second Zhongshan Road, Guangzhou, Guangdong, China.
| |
Collapse
|
4
|
Harder FN, Jung E, Weiss K, Graf MM, Kamal O, McTavish S, Van AT, Demir IE, Friess H, Phillip V, Schmid RM, Lohöfer FK, Kaissis GA, Makowski MR, Karampinos DC, Braren RF. Computed high-b-value high-resolution DWI improves solid lesion detection in IPMN of the pancreas. Eur Radiol 2023; 33:6892-6901. [PMID: 37133518 PMCID: PMC10511579 DOI: 10.1007/s00330-023-09661-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 02/15/2023] [Accepted: 02/26/2023] [Indexed: 05/04/2023]
Abstract
OBJECTIVES To examine the effect of high-b-value computed diffusion-weighted imaging (cDWI) on solid lesion detection and classification in pancreatic intraductal papillary mucinous neoplasm (IPMN), using endoscopic ultrasound (EUS) and histopathology as a standard of reference. METHODS Eighty-two patients with known or suspected IPMN were retrospectively enrolled. Computed high-b-value images at b = 1000 s/mm2 were calculated from standard (b = 0, 50, 300, and 600 s/mm2) DWI images for conventional full field-of-view (fFOV, 3 × 3 × 4 mm3 voxel size) DWI. A subset of 39 patients received additional high-resolution reduced-field-of-view (rFOV, 2.5 × 2.5 × 3 mm3 voxel size) DWI. In this cohort, rFOV cDWI was compared against fFOV cDWI additionally. Two experienced radiologists evaluated (Likert scale 1-4) image quality (overall image quality, lesion detection and delineation, fluid suppression within the lesion). In addition, quantitative image parameters (apparent signal-to-noise ratio (aSNR), apparent contrast-to-noise ratio (aCNR), contrast ratio (CR)) were assessed. Diagnostic confidence regarding the presence/absence of diffusion-restricted solid nodules was assessed in an additional reader study. RESULTS High-b-value cDWI at b = 1000 s/mm2 outperformed acquired DWI at b = 600 s/mm2 regarding lesion detection, fluid suppression, aCNR, CR, and lesion classification (p = < .001-.002). Comparing cDWI from fFOV and rFOV revealed higher image quality in high-resolution rFOV-DWI compared to conventional fFOV-DWI (p ≤ .001-.018). High-b-value cDWI images were rated non-inferior to directly acquired high-b-value DWI images (p = .095-.655). CONCLUSIONS High-b-value cDWI may improve the detection and classification of solid lesions in IPMN. Combining high-resolution imaging and high-b-value cDWI may further increase diagnostic precision. CLINICAL RELEVANCE STATEMENT This study shows the potential of computed high-resolution high-sensitivity diffusion-weighted magnetic resonance imaging for solid lesion detection in pancreatic intraductal papillary mucinous neoplasia (IPMN). The technique may enable early cancer detection in patients under surveillance. KEY POINTS • Computed high-b-value diffusion-weighted imaging (cDWI) may improve the detection and classification of intraductal papillary mucinous neoplasms (IPMN) of the pancreas. • cDWI calculated from high-resolution imaging increases diagnostic precision compared to cDWI calculated from conventional-resolution imaging. • cDWI has the potential to strengthen the role of MRI for screening and surveillance of IPMN, particularly in view of the rising incidence of IPMNs combined with now more conservative therapeutic approaches.
Collapse
Affiliation(s)
- Felix N Harder
- Institute of Diagnostic and Interventional Radiology, Technical University of Munich, School of Medicine, Munich, Germany.
| | - Eva Jung
- Institute of Diagnostic and Interventional Radiology, Technical University of Munich, School of Medicine, Munich, Germany
| | - Kilian Weiss
- Philips GmbH Market DACH, Röntgenstrasse 22, 22335, Hamburg, Germany
| | - Markus M Graf
- Institute of Diagnostic and Interventional Radiology, Technical University of Munich, School of Medicine, Munich, Germany
| | - Omar Kamal
- Institute of Diagnostic and Interventional Radiology, Technical University of Munich, School of Medicine, Munich, Germany
| | - Sean McTavish
- Institute of Diagnostic and Interventional Radiology, Technical University of Munich, School of Medicine, Munich, Germany
| | - Anh T Van
- Institute of Diagnostic and Interventional Radiology, Technical University of Munich, School of Medicine, Munich, Germany
| | - Ihsan E Demir
- Department of Surgery, Klinikum Rechts Der Isar, School of Medicine, Technical University of Munich, Munich, Germany
| | - Helmut Friess
- Department of Medicine II, University Hospital Rechts Der Isar, Technical University Munich, Munich, Germany
| | - Veit Phillip
- Department of Medicine II, University Hospital Rechts Der Isar, Technical University Munich, Munich, Germany
| | - Roland M Schmid
- Department of Medicine II, University Hospital Rechts Der Isar, Technical University Munich, Munich, Germany
| | - Fabian K Lohöfer
- Institute of Diagnostic and Interventional Radiology, Technical University of Munich, School of Medicine, Munich, Germany
| | - Georgios A Kaissis
- Institute of Diagnostic and Interventional Radiology, Technical University of Munich, School of Medicine, Munich, Germany
- Department of Computing, Faculty of Engineering, Imperial College of Science, Technology and Medicine, London, SW7 2AZ, UK
- Institute for Artificial Intelligence in Medicine, Technical University of Munich, Munich, Germany
| | - Marcus R Makowski
- Institute of Diagnostic and Interventional Radiology, Technical University of Munich, School of Medicine, Munich, Germany
| | - Dimitrios C Karampinos
- Institute of Diagnostic and Interventional Radiology, Technical University of Munich, School of Medicine, Munich, Germany
- Munich Institute of Biomedical Engineering, Technical University of Munich, Garching, Germany
| | - Rickmer F Braren
- Institute of Diagnostic and Interventional Radiology, Technical University of Munich, School of Medicine, Munich, Germany.
| |
Collapse
|
5
|
Tang Q, Zhou Q, Chen W, Sang L, Xing Y, Liu C, Wang K, Liu WV, Xu L. A feasibility study of reduced full-of-view synthetic high-b-value diffusion-weighted imaging in uterine tumors. Insights Imaging 2023; 14:12. [PMID: 36645541 PMCID: PMC9842823 DOI: 10.1186/s13244-022-01350-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Accepted: 12/05/2022] [Indexed: 01/17/2023] Open
Abstract
OBJECTIVES This study aimed to evaluate the feasibility of reduced full-of-view synthetic high-b value diffusion-weighted images (rFOV-syDWIs) in the clinical application of cervical cancer based on image quality and diagnostic efficacy. METHODS We retrospectively evaluated the data of 35 patients with cervical cancer and 35 healthy volunteers from May to November 2021. All patients and volunteers underwent rFOV-DWI scans, including a 13b-protocol: b = 0, 25, 50, 75, 100, 150, 200, 400, 600, 800, 1000, 1200, and 1500 s/mm2 and a 5b-protocol: b = 0, 100, 400, 800,1500 s/mm2. rFOV-syDWIs with b values of 1200 (rFOV-syDWIb=1200) and 1500 (rFOV-syDWIb=1500) were generated from two different multiple-b-value image datasets using a mono-exponential fitting algorithm. According to homoscedasticity and normality assessed by the Levene's test and Shapiro-Wilk test, the inter-modality differences of quantitative measurements were, respectively, examined by Wilcoxon signed-rank test or paired t test and the inter-group differences of ADC values were examined by independent t test or Mann-Whitney U test. RESULTS A higher inter-reader agreement between SNRs and CNRs was found in 13b-protocol and 5b-protocol rFOV-syDWIb=1200/1500 compared to 13b-protocol rFOV-sDWIb=1200/1500 (p < 0.05). AUC of 5b-protocol syADCmean,b=1200/1500 and syADCminimum,b=1200/1500 was equal or higher than that of 13b-protocol sADCmean,b=1200/1500 and sADCminimum,b=1200/1500. CONCLUSIONS rFOV-syDWIs provide better lesion clarity and higher image quality than rFOV-sDWIs. 5b-protocol rFOV-syDWIs shorten scan time, and synthetic ADCs offer reliable diagnosis value as scanned 13b-protocol DWIs.
Collapse
Affiliation(s)
- Qian Tang
- grid.443573.20000 0004 1799 2448Department of Radiology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei China ,grid.443573.20000 0004 1799 2448Biomedical Engineering College, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei China
| | - Qiqi Zhou
- grid.443573.20000 0004 1799 2448Department of Radiology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei China
| | - Wen Chen
- grid.443573.20000 0004 1799 2448Department of Radiology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei China
| | - Ling Sang
- grid.443573.20000 0004 1799 2448Department of Radiology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei China
| | - Yu Xing
- grid.443573.20000 0004 1799 2448Department of Radiology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei China
| | - Chao Liu
- grid.443573.20000 0004 1799 2448Department of Radiology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei China
| | - Kejun Wang
- grid.443573.20000 0004 1799 2448Department of Radiology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei China
| | | | - Lin Xu
- grid.443573.20000 0004 1799 2448Department of Radiology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei China
| |
Collapse
|
6
|
Ablefoni M, Leonhardi J, Ehrengut C, Mehdorn M, Sucher R, Gockel I, Denecke T, Meyer HJ. Magnetic Resonance Imaging of Peritoneal Carcinomatosis: Evaluation of High b-Value Computed Diffusion-Weighted Imaging. Curr Oncol 2022; 29:4593-4603. [PMID: 35877224 PMCID: PMC9324469 DOI: 10.3390/curroncol29070364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 06/21/2022] [Accepted: 06/27/2022] [Indexed: 11/16/2022] Open
Abstract
Over the last few years, diffusion-weighted imaging (DWI) has become increasingly relevant in the diagnostic assessment of peritoneal carcinomatosis. The aim of this study was to investigate the benefits of high-b DWI (c-DWI) compared to standard DWI in patients with peritoneal carcinomatosis. A cohort of 40 patients with peritoneal carcinomatosis were included in this retrospective study. DWI was performed with b-values of 50, 400, and 800 or 1000 s/mm² on a 1.5-T magnetic resonance imaging (MRI) scanner. C-DWI was calculated using a mono-exponential model with high b-values of 1000, 2000, 3000, 4000, and 5000 s/mm². All c-DWI images with high b-values were compared in terms of volume, detectability of peritoneal lesions, and image quality with the DWI sequence acquired with a b-value of 800 or 1000 s/mm² by two readers. In the group with a b-value of 800 s/mm², there was no statistically significant difference in terms of lesion volume. In the second group with a b-value of 1000 s/mm², peritoneal carcinomatosis lesions were statistically significantly larger than in the c-DWI with a- high b-value of 2000 s/mm² (median 7 cm³, range 1−26 cm³vs. median 6 cm³, range 1−83 cm³, p < 0.05). In both groups, there was a marked decrease in the detectability of peritoneal lesions starting at b = 2000 s/mm². In addition, image quality decreased noticeably from c-DWI at b = 3000 s/mm². In both groups, all images with high b-values at b = 4000 s/mm² and 5000 s/mm² were not diagnostically valuable due to poor image quality. The c-DWI technique offers good diagnostic performance without additional scanning time. High c-DWI b-values up to b = 1000 s/mm² provide comparable detectability of peritoneal carcinomatosis compared to standard DWI. Higher b-values over 1500 s/mm² result in lower image quality, which might lead to misdiagnosis.
Collapse
Affiliation(s)
- Maxime Ablefoni
- Department of Paediatric Radiology, University of Leipzig, Liebigstraße 20a, 04103 Leipzig, Germany;
- Department of Diagnostic and Interventional Radiology, University of Leipzig, Liebigstraße 20, 04103 Leipzig, Germany; (J.L.); (C.E.); (T.D.)
| | - Jakob Leonhardi
- Department of Diagnostic and Interventional Radiology, University of Leipzig, Liebigstraße 20, 04103 Leipzig, Germany; (J.L.); (C.E.); (T.D.)
| | - Constantin Ehrengut
- Department of Diagnostic and Interventional Radiology, University of Leipzig, Liebigstraße 20, 04103 Leipzig, Germany; (J.L.); (C.E.); (T.D.)
| | - Matthias Mehdorn
- Department of Visceral, Transplant, Thoracic and Vascular Surgery, University Hospital of Leipzig, 04103 Leipzig, Germany; (M.M.); (R.S.); (I.G.)
| | - Robert Sucher
- Department of Visceral, Transplant, Thoracic and Vascular Surgery, University Hospital of Leipzig, 04103 Leipzig, Germany; (M.M.); (R.S.); (I.G.)
| | - Ines Gockel
- Department of Visceral, Transplant, Thoracic and Vascular Surgery, University Hospital of Leipzig, 04103 Leipzig, Germany; (M.M.); (R.S.); (I.G.)
| | - Timm Denecke
- Department of Diagnostic and Interventional Radiology, University of Leipzig, Liebigstraße 20, 04103 Leipzig, Germany; (J.L.); (C.E.); (T.D.)
| | - Hans-Jonas Meyer
- Department of Diagnostic and Interventional Radiology, University of Leipzig, Liebigstraße 20, 04103 Leipzig, Germany; (J.L.); (C.E.); (T.D.)
- Correspondence:
| |
Collapse
|